Brush



H. 1. KmKPATmcK.

BRUSH.

APPLICATION FILED Aua.9. 192x.

' Patented May 9, 1922.

BoEcxHooMrgngrrMmnn, or Tonoiv'ro, Galiana.

BRUSH. i

T o all who/m, t may concern:

Be it known that I, HARRY JAMES KIRK- PATBICK, of the city'of Toronto, in the county of York, AProvince of Ontario, Canada, a subject of the King of Great Britain, have invented certain new and useful Improven mentsin Brushes, of which the following is a specification. f

This invention relates particularly 'to hand and bath brushes which are constantly subjected to the action of hot water, and my object is to devise a brush which will not be damaged by such treatment, and which will be cleanly, sanitary and durable.

I att-ain my object by means of the constructions hereinafter described and illustrated in the accompanying drawings in which n Fig. 1 is a longitudinal section of a brush constructed according to my invention;

Fig. 2 a cross section of the same;

Fig. 3 a cross section of the hollow back of the brush as'it appears before the insertion of the bristle carrying plate; and l l Fig. t a perspective view of the complete brush. l

`In the ldrawings like numerals of' reference indicate corresponding parts in the different figures. f

l is a hollow metal back formed with a rim 2. This back is preferably concaved longitudinally as shown, partly as a feature of an ornamental design and partlyto provide an internal shoulder or shoulders 3, for a purpose which will hereinafter appear. The sides of the back are also concaved longitudinally, partly to provide a finger grip and partly to provide internal shoulders 4 for a purpose which will hereinafter apear.

p 5 is a` metal plate through which are formed a series of rows of holes for the insertion of the tufts of bristles 6. tufts of bristles extend completely through the holes in the plate 5 and, in a manner well known in the art, are set in a mass of rubber compound 7 which, while originally plastic, sets suitably under the action of a vulcanizing heat. It will bey noted, particularly with reference to Fig. 1, that when the plate 5 is inserted within kthe rim 2 that this mass of rubber compound engages the shoulder 3, while the sides of the plate engage the shoulders 4. `The plate carrying the Specification of Letters Patent.

These,

bristles is thus suitably supported within the back (see Fig. l) so` that, when-the edges the back are so connected water is practically excluded from entering between the plate 'Patented May 9, 1922.` f Application filed August 9, 1921. Serial No. 491,630.` i

and the back, and any which does so enter is harmless, as the rubberv compound is not in any way injured by cold water or soap. .f

While I do not limit myself to any particular metal aluminum or Y an alloy of aluminum will usually be employed. y From the above description, it ,willA be seen that I have devised a brush which will 'attain the objects of my invention as set out. in thepreamble to my specification.,

What I claim as'my invention is l. A brush comprising an oblong metal plate having a plurality of holes therein; bristle tufts extending lthrough said holes; a mass of bristle sealing compound applied to the back of the plate and the inner ends of the tufts of bristles; a sheet metal back having a; rim within which the plate is adapted to fit, the back having a central depression stamped longitudinally in itsl back forming a longitudinal shoulder engageable by the mass of sealing compound and the edge of the rim being turned overthe plate to hold it in place. l f

2. A brush comprising an oblong metal plate having a plurality of holesv therein; bristle tufts extending through` said holes; a. mass of bristley sealing compound applied to the back of the plate and the inner ends, of thetufts of bristles; a sheet metal back having a rim within which the plate vlis adapted to fit, the back having an inwardly pressed groove in each of its longersides forming internal shoulders engagea-ble by the sides of the back of the plate and the the action ofhot or 65 edge of the rim being turned over the plate to hold it in place. v

3. A. brush comprising an oblong` metal plate having va plurality of holes therein; bristle tufts extending through saidholes; a mass of'bristle' sealing compound applied to the back ofthe plate and theinner ends of the tufts ofybristles; a sheet metal back;v

a rim with-in which the plate isl having adapted to fit, the back having a central de-A` pression stampedlongitudinally inits'back forming a longitudinal shoulder engageable Signed at Toronto this 25 day of July by the mass of sealing compound and having 1921. an inwardly pressed groove in each of its f longer sides forming internal shoulders en- HARRY JAMES KIR'KPATRG' 5 gageable by the back of the plate and Jthe Witnesses:

ed e of the rim being turned over jche plate E. SUTHERLAND, to old it in place. M. C. FETIERLY. 

